HTTP Request: The Internet of Things: 10

This video tutorial introduces the Hypertext Transfer Protocol (HTTP) and its role in enabling communication between an ESP8266 microcontroller and the Internet. It explains the client-server model, focusing on the client-side request process. The tutorial covers the structure of an HTTP request, including the message start line, header fields, and message body. It provides a detailed breakdown of each component, emphasizing the importance of text-based communication and the use of protocols. The tutorial concludes with practical examples of constructing HTTP requests for data posting.

What is the primary protocol used for communication between ESP 8266 and the Internet?

• HTTP

• SSH

• FTP

• SMTP

In the client-server model, who initiates the request?

• Both

• Server

• Neither

• Client

Which of the following is NOT a component of the message start line?

• Header

• Method

• URI

• Protocol Version

What method is used to send data to a server in an HTTP request?

• PUT

• DELETE

• POST

• GET

What is the purpose of the 'Host' header field?

• To specify the server's domain

• To close the connection

• To specify the server's IP

• To indicate the connection type

Which header field is used to specify the media type of the resource being sent?

• Host

• Content-Type

• API Key

• Connection

How is the message body separated from the header fields?

• By a space

• By a tab

• By two newlines

• By a single newline

What character is used to separate multiple fields in the message body?

• Comma

• Semicolon

• Ampersand

• Colon

What class is used to convert values into strings for the message body?

• StringBuilder

• String

• Text

• Char

What is the role of the message body in an HTTP request?

• To update data on the server

• To authenticate the user

• To specify the server

• To close the connection